6.7L Cummins

Class Exclusive Inline Six Turbodiesel

Chrysler spun off their pickup business from the Dodge brand into the Ram Truck Division in 2010. The goal was to build a brand that truck buyers could better identify themselves with. Like many, we miss the Dodge brand, but their strategy seems to be paying off. Not only has Ram Trucks succeeded in broadening their reach, but their quality has never been better. Many will agree that Dodge diesel owners were Cummins' customers first when they decided to purchase their vehicle, but this state of mind seems to have changed drastically, as has the company's line of 3/4 and 1 ton trucks. Capability, quality, and refinement are words you could use with confidence when describing the latest offerings from Ram, who continues to offer the prized 6.7L Cummins turbodiesel in their heavy duty pickups. The 6.7L Cummins was first introduced midway through the 2007 model year, replacing the legendary 5.9L. While many of us were sad to see the tried and true B series replaced for good, the 6.7L Cummins has evolved in ways that the 5.9L simply could not. As the 6.7L needs to meet strict emissions regulations, it comes equipped with a diesel particulate system and, recently, SCR with the use of DEF has become standard. What started as a 610 lb-ft engine has transformed into a class leading 900 lb-ft behemoth. Not without its fair share of problems upon the engine's debut, Ram and Cummins seem to have worked out the kinks.

6.7L Cummins Quick Specs


Cummins Inc


6.7L, 409 cubic inches


Inline 6 cylinder diesel

Bore x Stroke:

4.21 in x 4.88 in


• Cast iron engine block
• Cast iron cylinder heads


Bosch high pressure common rail


Single variable geometry turbocharger (VGT)


350 hp @ 3,013 rpm (intro)
385 hp @ 2,800 rpm (2016 - 2018 MY, H.O. model)


650 lb-ft @ 1,600 rpm (intro)
900 lb-ft @ 1,700 rpm (2016 - 2017 MY, H.O model)
930 lb-ft @ 1,700 rpm (2018 MY, H.O model)

Engine Weight:

1050 lbs (dry)

Emissions Equipment:

• Exhaust gas recirculation
• Diesel particulate filter w/ active regeneration
• SCR w/ DEF (introduced 2013)

Alternative Fuels:

B20 biodiesel compatible